Ключевые слова: background, balance, billboard, black, blackboard, board, business, career, chalk, chalkboard, choice, comparison, concept, conceptual, decisions, drawing, education, employment, enjoy, family, free, handwriting, happiness, happy, harmony, health, job, learning, life, lifestyle, message, occupation, relax, scale, sign, sketch, solution, space, strategy, stress, symbol, text, texture, used, weight, white, word, work, write,